package headfirst.combined.djview;
  
public interface BeatModelInterface {
    void initialize();
  
    void on();
  
    void off();
  
    void setBPM(int bpm);
  
    int getBPM();
  
    void registerObserver(BeatObserver o);
  
    void removeObserver(BeatObserver o);
  
    void registerObserver(BPMObserver o);
  
    void removeObserver(BPMObserver o);
}
